ncp5208 ON Semiconductor, ncp5208 Datasheet

ncp5208

Manufacturer Part Number

ncp5208

Description

Ddr-i/ii Termination Regulator

Manufacturer

ON Semiconductor

Datasheet

1.NCP5208.pdf (9 pages)

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NCP5208

DDR−I/II Termination

Regulator

active termination of DDR−I/II SDRAM. The device can be operated

from a single supply voltage as low as 1.7 V. For DDR−I

applications, the device is capable of sourcing and sinking current up

to 1.5 A with the output voltage regulated to within "3% or better. A

separate voltage feedback pin ensures superior load regulation

against load and line changes.

and thermal shutdown. Open−drain VTT OK output (POK) is added

for system monitoring. The shutdown pin can tri−state the regulator

output for Suspend To RAM (STR) state. This device is available in a

SOIC−8 package.

Features

•

Typical Applications

•

May, 2006 − Rev. 5

2.5 V

The NCP5208 is a linear regulator specifically designed for the

Protective features include soft−start, source/sink current limits

Supports Both DDR−I and DDR−II SDRAM Requirements

Single Supply Voltage Operation as Low as 1.7 V

Integrated Power MOSFETs

Few External Components Needed

Source and Sink Current Up to 1.5 A

Load Regulation Within "3%

Both Source and Sink Current Limits

Open−Drain VTT OK (POK) Pin

Shutdown Pin

Thermal Shutdown

Housed in SOIC−8 Package

Pb−Free Package is Available

DDR Termination Voltage

Active Bus Termination (SSTL−2, SSTL−3)

VDDQ

Figure 1. Typical Application Circuit

VDDQ

PVIN

AVIN

NCP5208

GND

VTT

VFB

AVIN

VTT

POK

OUT

1.25 V,

1.5 A

NCP5208DR2

NCP5208DR2G

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

Device

ORDERING INFORMATION

GND

POK

VFB

W = Work Week

MARKING DIAGRAM

PIN CONNECTIONS

http://onsemi.com

= Assembly Location

= Wafer Lot

= Year

= Pb−Free Package

(Pb−Free)

Package

SOIC−8

(Top View)

N5208

ALYW

Publication Order Number:

CASE 751

D SUFFIX

SOIC−8

2500/T ape & Reel

VTT

PVIN

AVIN

VDDQ

Shipping

NCP5208/D

†

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